Extensive introgressive hybridization within the northern oriole group (Genus Icterus) revealed by three‐species isolation with migration analysis

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dc.contributor.authorOmland, Kevin E.
dc.contributor.authorJacobsen, Frode
dc.date.accessioned2018-11-09T17:36:11Z
dc.date.available2018-11-09T17:36:11Z
dc.date.issued2012-08-29
dc.description.abstractUntil recently, studies of divergence and gene flow among closely-related taxa were generally limited to pairs of sister taxa. However, organisms frequently exchange genes with other non-sister taxa. The “northern oriole” group within genus Icterus exemplifies this problem. This group involves the extensively studied hybrid zone between Baltimore oriole ( Icterus galbula ) and Bullock’s oriole ( I. bullockii ), an alleged hybrid zone between I. bullockii and black-backed oriole ( I. abeillei), and likely mtDNA introgression between I. galbula and I. abeillei . Here, we examine the divergence population genetics of the entire northern oriole group using a multipopulation Isolation-with-Migration (IM) model. In accordance with Haldane’s rule, nuclear loci introgress extensively beyond the I. galbula – I. bullockii hybrid zone, while mtDNA does not. We found no evidence of introgression between I. bullockii and I. abeillei or between I. galbula and I. abeillei when all three species were analyzed together in a three-population model. However, traditional pairwise analysis suggested some nuclear introgression from I. abeillei into I. galbula , probably reflecting genetic contributions from I. bullockii unaccounted for in a two-population model. Thus, only by including all members of this group in the analysis was it possible to rigorously estimate the level of gene flow among these three closely related species.en_US
dc.description.sponsorshipThis work was funded by National Science Foundation grants to K.E.O. (DEB-0347083 and DEB-1119506), and Maryland Ornithological Society Avian Research Grants and an American Ornithologist’s Union Research Grant to F.J.en_US
dc.description.urihttps://onlinelibrary.wiley.com/doi/full/10.1002/ece3.365en_US
dc.format.extent17 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/M2JQ0SZ98
dc.identifier.citationFrode Jacobsen, Kevin E. Omland, Extensive introgressive hybridization within the northern oriole group (Genus Icterus) revealed by three‐species isolation with migration analysis, Ecology and Evolution, Volume 2, Issue 10, 2012 , https://doi.org/10.1002/ece3.365en_US
dc.identifier.urihttps://doi.org/10.1002/ece3.365
dc.identifier.urihttp://hdl.handle.net/11603/11938
dc.language.isoen_USen_US
dc.publisherBlackwell Publishing Ltden_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Biological Sciences Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rightsAttribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)*
dc.rights.urihttps://creativecommons.org/licenses/by-nc/3.0/*
dc.subjectAllele sharingen_US
dc.subjectcoalescenten_US
dc.subjectIcterusen_US
dc.subjectIMa2en_US
dc.subjectincomplete lineage sortingen_US
dc.subjectintrogressionen_US
dc.subjectmultipopulationen_US
dc.subjectnorthern oriolesen_US
dc.titleExtensive introgressive hybridization within the northern oriole group (Genus Icterus) revealed by three‐species isolation with migration analysisen_US
dc.typeTexten_US

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